how can set field value to be uniqe

hi.
i want my user have uniqe field value. for example each user with his mobile phone number can register one time in my site and prevent from register two user with duplicate mobile phone number. how to do that? need use code field? is there any easiest way?

Install CB Query Field then use its Query Validation on your Text field under Integrations > CB Query Field to validate other users values for that field. Example as follows.


This would return a positive result if someone has the same cb_phone value, which can be used to fail the fields validation.

i have another problem, is it possible use two ajaxify validation? one "code field" and other "query field"? when use this two validation,there group of validation is "OR" or "AND"?means if i have two validation which of that need to verify or both of that need to verify? if i want both need to verify what need to do?

Yes, you can use Code and Query validation at the same time. Both would need to pass their validation checks so it is an AND scenario. If you need an OR case you'll need to use API to run your query in the Code action and just combine the two validations.

But when I use that two validation , the query validation ignored. Is it related to set ajaxify validation on both?

The query validation shouldn't be ignored, but it's going to have to pass validation of whichever plugin is loaded first before the other validation will trigger. Are you saying no matter what only 1 ajax validation is working at a time?